Electronic circuit comprising an amplifier for amplifying a...

Details Electronic circuit comprising an amplifier for amplifying a... Electronic circuit comprising an amplifier for amplifying a...

2005-01-11

2005-01-11

Shingleton, Michael B (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including differential amplifier

C330S127000, C330S259000, C330S297000, C327S052000, C327S054000, C327S057000

Reexamination Certificate

active

06842073

ABSTRACT:
An electronic circuit comprising an amplifier (AMP) for amplifying a binary input signal (Ui) including an input stage coupled to receive the binary input signal (Ui) comprising means for supplying a DC current to the input stage. The means supplies a current having a first (I1) current value to the input stage during a period of time that is approximately equal to the period of time corresponding to a transition phase from a first binary signal value to a second binary signal value. During the remaining time, the means supplies a current having a second (I2) current value which is smaller than the first (I1) current value. By virtue thereof, the electronic circuit only consumes a significant amount of power during a transition phase from the first binary signal value to the second binary signal value. The amplifier (AMP) can be implemented in all kinds of digital circuits, of which the digital voltage range (the difference between the second and the first binary values) must be increased. For example, in oscillators that supply many clock phases, a substantial saving in power can be obtained by applying said amplifier (AMP) instead of prior-art amplifiers.

REFERENCES:
patent: 6535026 (2003-03-01), Chung et al.

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